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1. US20120134637 - MULTI-CORE OPTICAL FIBER AND METHOD OF MANUFACTURING THE SAME

Office
États-Unis d'Amérique
Numéro de la demande 13360853
Date de la demande 30.01.2012
Numéro de publication 20120134637
Date de publication 31.05.2012
Type de publication A1
CIB
G02B 6/036
GPHYSIQUE
02OPTIQUE
BÉLÉMENTS, SYSTÈMES OU APPAREILS OPTIQUES
6Guides de lumière; Détails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p.ex. des moyens de couplage
02Fibres optiques avec revêtement
036le noyau ou le revêtement comprenant des couches multiples
C03B 37/14
CCHIMIE; MÉTALLURGIE
03VERRE; LAINE MINÉRALE OU DE SCORIES
BFABRICATION OU FAÇONNAGE DU VERRE, DE LA LAINE MINÉRALE OU DE SCORIES;  TRAITEMENTS ADDITIONNELS DANS LA FABRICATION OU LE FAÇONNAGE DU VERRE, DE LA LAINE MINÉRALE OU DE SCORIES
37Fabrication ou traitement de copeaux, de fibres ou de filaments obtenus à partir de verre, substances minérales ou scories ramollies
10Traitement non chimique
14Finition des fibres ou filaments
CPC
G02B 6/02042
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
02Optical fibre with cladding ; with or without a coating
02042Multicore optical fibres
G02B 6/0365
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
02Optical fibre with cladding ; with or without a coating
036core or cladding comprising multiple layers
03616Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
03638having 3 layers only
0365arranged - - +
Déposants IMAMURA Katsunori
Inventeurs IMAMURA Katsunori
Données relatives à la priorité 2010-059960 16.03.2010 JP
Titre
(EN) MULTI-CORE OPTICAL FIBER AND METHOD OF MANUFACTURING THE SAME
Abrégé
(EN)

A multi-core optical fiber includes: a plurality of core portions; and a cladding portion positioned so as to surround each of the core portions, wherein each core portion includes a center core portion that has a refractive index greater than that of the cladding portion, a second core portion that is formed so as to surround the center core portion and that has a refractive index less than that of the center core portion, and a depressed portion that is formed so as to surround the second core portion and that has a refractive index less than those of the second core portion and the cladding portion, and an interval distance between the adjacent core portions is set such that optical cross-talk between the core portions for a total length of the multi-core optical fiber is equal to or less than −30 dB at a wavelength of 1.55 μm.


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